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Fluorescent and cathodoluminescent phophors structurally related to sodalite

Patent ·
OSTI ID:871866
 [1];  [2]
  1. Tijeras, NM
  2. San Diego, CA
+ Show Author Affiliations

Blue, quantum-confined phosphors for field-emission displays made by reducing metal (M) sulfoaluminates at high temperature. This yields phases of the type M.sub.4 (AlO.sub.2).sub.6 S. Bulk sulfide contaminant mixed with the reduced sulfoaluminate phase is removed by treating it with a chelating agent in nonaqueous solution. A photometric cathodoluminescence efficiency of 9 lumen/watt at 1000 V for Sr.sub.3 PbS(AlO.sub.2).sub.6 is observed. Undoped Sr.sub.4 S(AlO).sub.6 displays 5 lumen/watt at 1000 V, with excellent blue chromatic saturation.

Research Organization:
SANDIA CORP
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
US 5814245
OSTI ID:
871866
Country of Publication:
United States
Language:
English

References (4)

Synthesis and structure of sulfide aluminate sodalites journal January 1992
Structures of strontium selenite and strontium selenide aluminate sodalites and the relationship of framework structure to vibrational spectra in aluminate sodalites journal July 1993
Luminescence of Zn4X and Cd4X clusters (X = S, Se) in an aluminate or borate cage journal March 1995
The structures of strontium tellurite and strontium telluride aluminate sodalites studied by powder neutron diffraction, EXAFS, IR and MAS NMR spectroscopies journal January 1996

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aqueous solution
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chelating
chelating agent
chromatic
contaminant
displays
efficiency
emission display
emission displays
excellent
field-emission
field-emission displays
fluorescent
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removed
saturation
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sulfoaluminates
temperature
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type
undoped
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